Copyholder



P. GRABLER July 26,1927.

COPYHOLDER Original Filed Jan. 16, 1925 Patented July 26, 1927.

l UitllTED STATE-.S PATENT OFFICE.

PETR GRABJER, O Ii YROCKY RIVER, OHIO, ASSIGNOR OIF ONE-HALE TO CHARLES E. DAY, OF LAKEWOOD, OHIO. 1

CorYHoLnER.

Grigi-nal application filed Januaryrl, 1925, Serial No. 2,720'. Divided and this application led March My invention relates to copy holders generally and to clutch and brake mechanisms adapted to such copy holdersparticularly.

@ne of the objects of my invention is a simple and eiiicient and easily operable and practically noiseless clutch and brake vmeans Jfor operating and locking a rotatable member.

.inet-her object ot m-y invention is amoving means and a brake means, both associated nith a movable member and each of which means operates independently of the other and either ot' which means is operable -Without operating or interfering Wit-li the other' means.

Another object ot'my invention is a brake means, associated with a rotatable member, which loclrs the'rotatable member in any rotative position so that a movable copy support plate. of a copy holder 'for instance, can be held' in any position into Which it is moved.

Another object ot'my invention is a brake means. associated with a movable member,

' which locks the rotatable member in any rotative position but permits ot therotation ot the movable member in one direction so that a movable copy support plate of a copy holder. tor instance, can be heldin any position into which it is moved and can be rmoved trom that position in one direction.

Another object oit my invention is a brake means and a rotating means, both associated ivith a rotatable member, in which the brake means normally and automatically lclrs the rotatable member in one direction and in auv position into Which it is rotated and in which the rotating means is normally and automatically disengaged from the rotatable member but can be rotated in the opposite direction trom an;v ot the positions into which the lock means has held the same.

I illustrate my invention in the accompanying drawing which shoivs one embodiment oit my invention and as applied to a copv holder apparatus. I am aware that my invention can have other embodiments and other applications and tiat changes in the structure of the elements and in the; arrange- Serial No. 94,075.

ment ofY the elements can b e madeWith-inthe scope ot the appended claims.

In: the accompanying` drawing Fig. i is.- a frontv View ot avcopy holder apparatus embodying, thel features of my invention and shows, generally, a. movable lcopy support plate and the operating sha-ft 3 3 in Fig. 2, andshows the brake and the rotating mechanism more clearly.

Fig. t is a section, taken on a vertical plane indicated by the line 4 4 in Fig. 3, and shoi'vs the brake and the rotating mechanisms in another plane. f

Fig. 5 is aI perspective vievv ot the brake and rotating` mechanisms and shows the general association of these mechanisms.

Similar reference charactersV refer to similarparts throughoutY the views. Y

The` copy holder selected to illustrate my invention, shown in the accompanying drawing, comprises, generally, the movable copy support plate A, the moving mechanism to move the plate A, and a brake mechanism to lock the moving mechanism, and consequentlv the plate A against rotation in one direc-k tion. andj in any position into which it may be moved, and operating mechanism to move the moving mechanism, and consequently the plate A in the opposite direction from any locked position. Y

The plate A is guided in the posts 10 and can: slide longitudinally thereon The pulley l1, in the present instance having. a V groove, is secured to the Jframe B and is disposedv behind the plate A.

"The shaftv C isfjournaled in the base D and the vpulley l2, complementary to the pulley lli. is secured thereon.` Thev endless-belt 13 connects the t-:vvo pulleys so that the rotation ot either one ot the pulleys also rotates the other.

The-nose- 14 is secured to the back ofA the plate A and engages the belt 13 so that the rotation oi" either ot the pulleys, and the consequent movement of the belt also moves the plate A.

A prominent feature ot my invention is a brake mechanism to lock the shaft C into any position it maybe rotated into and a rotating mechanism which co-operates with the brake mechanism so that the rotation ot the shatt C can be started Afrom any of' the locked positions.

In the present brake and the rotating mechanism as operating on a cup-shaped member;` it appears obvious that a brake and rotating mechanism may be applied to or associated with other forms.

An operating drum 15, in the present instance tormed as a cup and threaded onto the shaft C and against a shoulder, rotates with the shaft C and has the tubular iange 16. 1

The cover -17 is journaled on the shaft C and closes the open end ot the cup 15.

The brake mechanism comprises the housing 18 which is disposed on one side ot' the 'flange 1,6 and has the ear 19 which contacts the base D and is held thereon by the screws 20 as seen in Fig. et.

The roller 21 lays loosely or is confined loosely inside ot the housing 18.

It is observed that the wall 22 of the housingl 18 is angular to or eccentric with the flange 16; it being closer to the iiange at the bottom than at the top. Y

rThe lever- 23 is tulcrumed'on the base D and has the nose 24C extending through the wall 22 and. into the housing 18 below the bottom ot the roller 21.

Normally and automatically, the roller 21 fails downwardly due to gravity and one side thereot contacts the outside of the flange 16 while the other side thereof contacts the insident the wall 22. Since the wall 22 is eccentric with the flange 16, and since the roller 21 normally lays in between the ilange 16 and the wall 2,2, the drum or cup 15, and consequently the shaft C, can notbe rotated in the direction of the arrow shown in Fig. since the roller 21 wedges in between the flange and the wall as soon as a rotation in that direction is attempted, but the sha'tt C can be rotated in a direction opposite that shown by the 4arrow in Fig. 4 since, by such Vopposite rotation, the roller 21 rolls upwardly and thereby releases itself trom the wedging or locking position.

lVhen the outer end 25 of the lever 23 is pressed downwardly, the nose 24 moves up wardiy and thereby moves the roller 21 upwardly and out ot engagement ofthe flange 16 and the wall 22 whereupon the brake actiono'i' the roller 21 is released or open and the cup or drum 15, and consequently the shaft C, can be rotated in either direction.

instance 1 have shown theV 'With the brake arrangement shown, the shaft C can be rotated in a direction opposite to that shown by the arrow in Fig. l and is automatically locked in anyV rotative position when the brake mechanism is in normal position so that the plate A,'through the pulleys 11 and 12 and the belt 13, is securely and automatically held against downward movement as long as the lbrake mechanism remains in nor nal position. This arrange mentpermits the plate A to be moved into any longitudinal position and automatically remains iny that position without manipulating any other means.v

When it is desired to move the plate A downward, 'the end 25 of the lever 23 is pressed downwardly whereupon the brake mechanism is released by moving the roller 21 out of .engagement with the contacting members and the shaft C, and consequently the plate A, can be moved in either direction. Upon release ot' the end 25, the roller 21 autoinatically drops into braking position. When it is desired to move the plate A downwardly to any desired position, it is only necessary to press the end 25 dowin wardly and hold it down until the plate A reaches the desired position; whereupon the end 25 is released and the roller 21 then automatically drops into braking position and automatically locks the plate A in the adjusted position.

rthe brake mechanism automatically locks the plate A against downward movement in any position to which it may be moved and automatically permits the upward movement oi" the plate A as well as manual ma nipulation so that the plate A can be moved up or down or to permit the plate A to move downwardly due to the gravity thereof to any desired position.

The mechanism to rotate the shaft C in the direction opposite to that ot the arrow shown in Fig. d is associated with and acts on the cup or drum 15 as does the brake mechanism.

The bracket 26 has the lower end 27 there` of secured to the base D and the other end 28 thereof extends into the drum 15 to form an abutment fer-the roller 29. The bumper 30, of 'non-metallic material, is fixed in the end 28 and normally abuts the bottom ot the roller 29.

The block 31 is secured to the inside of the cover 17 in proper relation to the end 28 ot the bracket 26. The block 31 is notches to 'form the wall 32 and is disposed so that this wall 32 is angular to or eccentric with `the inner wall 33 of the flange 16 and so that the space between the lower end ot the wall 32 andthe wall 33 is less than the space between the upper end oi' the wall 32 and the wall33. The bumper 311, o't non-metallic material, is fixed into the wall 35 of the block 31.

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The roller Q9 lays loosely in the space between the walls 32 and 33 and normally rests against the bumper' 29.

The lever E is fulcrumed on the basea and has the slot 36 through the inner end 37 thereof.

The pin 3S is secured to the cover 17l and extends outwardly therefrom and through the slot 3G.

`When the outer end 39 of the lever E is pushed` downwardly, the end 37 thereof moves upwardly. In lthis upward movement of the end 37,'the pin 38 isfalso moved upwardly and, since the 'pin 38 is secured to the cover 17 and the cover 17 can rotate on the shaft C and the block 3l is also secured to the cover 17, the upward movement of the pin rotates the cover 17 in the direction opposite to that of the arrow in Fig. et. In this rotative movement of the cover 17, the block 31 moves with it and, since the walls 32 and 33 are eccentric and the roller 30 lies loosely or tloatingly between these walls,the wall 352 wedges the roller 30 against the wall 33 and thereby grips the wall and the cup or drum 15 and rotates the same with the cover. Since the drum is unrotatable on the shaft C, the movement on the cover and consequent movementof the drum also moves the shaft and the mechanism operatively connected therewith and consequently moves the plate A.

lVith this operating mechanism, the sha-ft C can be rotated in either direction by manually rotating the drum when the brake is released and can be rotated'in a direction opposite to that shown by the arrow in Fig'. 4 b v means of the lever E.

The operation of the entire mechanism shown and described is'as follows Then the members are in positio-n shown in the drawing, the plate A isfmoved up-` wardly by depressing the end 39 of the lever E as described. and such upward movement is periodical or in steps and the length of each step may be adjusted by the screw 40.

lVhen the outer end 25 of the lever 23 is depressed, the brake is released and the plate A moves downward automatically, due to gravity in the present instance, and this downward movement of the plate is arrested by releasingthe end 25 of the lever 23 as previously described.

Therefore, the plate A can be adjusted primarily to any desired up or down position by releasing` the brake and rotating the shaft C manually; the plate A'can be permitted to move downwardly to any desired position by operating the lever 23 to* release the brake until the plate has attained the desired downward position and then letting' the brake act' normally to lock the plate in the desired position; the plate can be moved upwardly by operating the lever E the operation of each of the levers is completely independent of the operation of the other lever; theoperation of either one of the levers does not laffect the operation of the mechanism operated by the other lever; each of the mechanisms connected with the levers operates automatically iny co-operation with the mechanism connected with the other lever; and the plate can be adjustedto desired position, in either direction, or can be moved periodically to spaced positions in one direction, and can automatically be held in any position, and can be moved from this position without operating the brake mechanism.

I. claim :k

l, In an apparatus of the character described7 a rotatable member normally free to be rotated, clutch means associated with said rotatable member and normally out of engagement therewith, and an operating means arranged to throw said clutch means into engagement. with saidrotatable member during the initial portion of the operating movement of said operating means and to rotate said rotatable member during a subsequentl portion of the samey operating movement of said operating means.

2. In an apparatus of the character described, a rotatable member normally free to be rotatedin one direction, a brake including clutch means normally loclringsaid member against rotation in theopposite direction, and means to release said clutch means to permit the rotation of said member in either direction.A l

' 3. In an apparatus of the character described, a rotatable member normally free to be rotated in one direction, a brake including clutch means normally locking said member against rotation in the opposite direction, means to release said clutch means to permit the rotation of said member in either direction, and operating means including clutch means to engage said member to rotate the samein said one direction when this operating. means is operated.v

t. In an apparatus of the` character described, a shaft individually rotatable, and a vroller normally contacting said shaft and a wall arrangedat an angle to the circumference of said shaft to normally lock said member against rotation in one direction.

5. In an apparatus of the character described, a. Arotatable member, a housing having a wall arranged at an angle to the circumference of said member, and a roller in said housing and normally contacting said member and said wall to normally lock said member against rotation in one direction.

6. `In an apparatus of the character described, a.y rotatable member, a roller normally contacting said member `and a wall arranged at an angle to the circumference of said member to normally lock said member against rotation inv one direction, and a lever operable to move said roller out of engagement with said member and said wall to permit the rotation of said member in either direction. i Y

7. In an apparatus of the character de scribed, a rotatable member, a roller normally contacting said member and a wall arranged at an angle to the circumference ot said member to normally lock said member against rotation in one direction, oper ating means including clutch means to vengage said member to rotate the same in the opposite direction when the operat-ing means is operated, and means .tor moving said roller out of the locking position thereof to permit the rotation ot said member in either direction.

8. In an apparatus of the character described, a rotatable member, a roller normally contacting said member and a wall at an angle to the circumference oit said member to normally loclr said member against rotation in one direction, a roller normally held out of contact with said member and with a. wall arranged at an angle to the circumference of said member, a lever operable to move the iirst mentioned roller out of locking position thereof to permit the rotation of said member in either direction, and a lever arranged to move the second mentioned roller into contact with said member and with the second mentioned wall and to rotate said member in the opposite direction.

9. In an apparatus ot the character described, a rotatable member having a cup, a roller acting onthe outside of said cup to lock said member against rotation in one direction, and a roller acting on the inside ot said cup to rotate said member in the opposite direction..

10. In an apparatus ot the character described, a rotatable member having a cup` a roller normally acting on the outside of said cup to lock said member against rotation in one direction, a roller inside ot said cup and normally out of contact with said cup, means for moving the lirst mentioned roller out of engagement with the outside of Vsaid cup to permit the rotation ot said member in either direction, and means for moving the second mentioned roller into contact with the inside ot said cup and rotating said member in the opposite direction.

llJAn apparatus of kthe character described, including, a rotatable member, a drum secured to said member and rotatable therewith, a cover journaled on said member adjacent to said drum, a block secured to said cover and extending into said drum and having an abutment wall eccentric with the wail oit said drum, a roller loosely confined between the eccentric wall of said block and the inside of the wall of said drum, an abutment normally retaining said roller out of engagement with both of said walls to permit the rotation of `said drum in either direction, and means tor rotating said cover and thereby wedging said roller between both ot said walls and rotating said drum with said cover.

12. An apparatus of the character described, including, a rotatable member, a drum secured to said member and rotatable therewith, means for rotating said drum in one direction, a housing adjacent to said drum and having an abutment wall eccentric with the wall of said drum, a roller loosely confined in said housing and normally contacting both ot said walls to lool; said drum against rotation in the opposite direction, means for releasing said roller to permit the rotation of said drum in either direction, and said roller adapted to automatically disengage said walls when said means ior operating the drum is in operation.

13. An apparatus of the character described, including, a rotatable member, a

ldrum rotatable with said member, a cover journaled on said member adjacent to said u um, a block secured to said cover and eX- tending into said drum and having an abutment wall eccentric with the wall of said drum, a roller loosely confined between the eccentric wall ot said block and the inside of the wall of said drum, an abutment normally retaining said rollerV out ot engagement with both of said walls to permit the rotation of said drum in either direction, means for rotating said cover and thereby wedging said roller between said walls and rotating said drum with said cover, a housing adjacent to said drum and having an abutment wall eccentric with the wall ot said drum, a roller loosely confined in said housing and normally contacting both of said walls t0 lock said drum against rotation in the opposite direction, means tor releasing the secondly mentioned roller to permit the rotation of said drum in either direction, and the secondly mentioned roller adapted to automatically disengage said walls when said means for rotating the drum is in operation. Y

lll. An apparatus oit the character described, including, a plate movable in two opposite directions, a rotatable shaft, operative connectionbetween said plate and said shaft to move said plate upon rotation oi said shaft, means for rotating said shatt in one direction to move Said plate in one Vdirection, a brake acting on said shaft to prevent the rotation thereof in the opposite direction to lock said plate against movement in the opposite direction, and means for releasing said brake to permit the movement of said plate in either direction.

15. An apparatus ot the character described, including, a plate movable in two opposite directions, a rotatable shaft, operai vent the rotation thereof in the opposite di! rection to lock said plate against movement in the opposite direction, said brake auton matically disengaging from said shaft when said means for rotating the shaft is in operation, means for releasing said brake to per mit the movement of said plate in either direction, and said means for rotating the shaft and said means for releasing the brake operable independently of each other and the operation of neither one of these means depending upon the operation of the other of these means.

16. An apparatus of the character described, including, a plate movable in tWo opposite directions, a rotatable shaft, operative connection bet-Ween said plate and said shaft to move said plate upon rotation of said shaft, means for rotating said shaft in one direction to move said plate in one direction, a brake acting on said shaft. to prevent the rotation thereof in the opposite direction to lock said plate in the opposite direction against the Weight thereof, said brake automatically disengaging said shaft when said means for rotating the shaft is in operation, means for releasing said brake to permit the movement of said plate in either direction, and said means for rotating the shaft and said means for releasing the brake operable independently of each other andthe operation of neither of these means depending upon the operation of the other of these means.

17. In a copy holder, a'movable plate, a rotatable shaft, connecting means between said plate and said shaft, and means automatically locking said shaft against rotation in one'direction and in any position and thereby lock said plate-against movement in one direction and in any position into which the same is moved.

18. In a copy holder, a movable plate, a rotatable shaft, connecting means between said plate and said shaft, means automati cally locking said shaft against rotation in one direction and in any rotative position thereof and thereby lock said plate against movement in one direction and in any position into which the same is moved, means for rotating said shaft in the opposite 'direction and normally held out of engagement With said shaft, and means automatically engaging said shaft to rotate the same in the opposite direction When said rotating means is operated and thereby move said plate in the opposite direct-ion.

In testimony of the foregoing, I afiix my signature.

PETER GRABLER. 

